One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,9)(4,10)(5,13)(6,7)(8,14)(11,12)(15,16)(17,18,22,23)(19,25,26,24)(20,29,31,21)(27,32,30,28)(33,34)(35,39)(36,40)(37,46)(38,42)(41,47)(43,44)(45,48)(2,7)(4,9)(5,14)(11,16)(18,23)(21,29)(24,25)(28,32)(33,35)(34,39)(36,37)(38,43)(40,46)(41,48)(42,44)(45,47) involution — undirected(2,7)(3,10)(8,13)(11,16)(19,26)(24,25)(27,30)(28,32)(35,43)(36,45)(39,44)(40,48) involution — undirected(1,3,6,10)(2,4,7,9)(5,11,14,16)(8,12,13,15)(17,19)(18,24)(20,30)(21,28)(22,26)(23,25)(27,31)(29,32)(33,36,38,45)(34,40,42,48)(35,37,43,47)(39,46,44,41)(1,4)(2,3)(5,12)(6,9)(7,10)(8,11)(13,16)(14,15)(17,20)(18,21)(19,27)(22,31)(23,29)(24,32)(25,28)(26,30)(33,37)(34,41)(35,36)(38,47)(39,48)(40,44)(42,46)(43,45) involution — undirected(1,5,6,14)(2,8,7,13)(3,11,10,16)(4,12,9,15)(17,21)(18,20)(19,28)(22,29)(23,31)(24,30)(25,27)(26,32)(33,34)(35,44)(36,40)(37,41)(38,42)(39,43)(45,48)(46,47)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.